---
id: CVE-2026-70341
title: >-
  Use after free in Microsoft Edge (Chromium-based) allows an authorized
  attacker to execute code over a network.
summary: >-
  Use after free in Microsoft Edge (Chromium-based) allows an authorized
  attacker to execute code over a network.
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: microsoft
product: edge
affected:
  - edge
  - edge < 152.0.4191.52
  - edge_chromium < 152.0.4191.52
patched:
  - edge 152.0.4191.52
  - edge_chromium 152.0.4191.52
published: '2026-09-11'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T15:45:16.650'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70341'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00637
epssPercentile: 0.50347
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-12T03:55:42.747889Z'
ingestedAt: '2026-09-14T15:23:07.478Z'
---

## Overview

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

## Affected

- `edge`
- `edge < 152.0.4191.52`
- `edge_chromium < 152.0.4191.52`

## Remediation

Upgrade past the affected range:

- `edge 152.0.4191.52`
- `edge_chromium 152.0.4191.52`